Apparatus for introducing gases into liquids.



S. P. A. WBNSTROM.

APPARATUS FOR INTRODUCING GASES INTQ LIQUIDS.

APPLICATION FILED NOV. 12, 1907.

Patented Feb. 23, 1909.

SVEN PETTER ALFRID WENSTROM, OF OSKARSHAMN, SWEDEN.

APPARATUS FOR INTRODUCING GASES INTO LIQUIDS.

Specification of Letters Patent. Application filed November 12, 1907.

Patented Feb. 23, 1909.

Serial No. 401,892.

To all whom it may concern:

Be it known that I, SVEN PETTER ALFRID ,IVENsTRoM, coppersmith, asubject of the King of Sweden, residing at Kopmangatan 68, inOskarshamn, in the Kingdom of Sweden, have invented certain new anduseful Improvements in Apparatus for Introducing Gases into Liquids, ofwhich the following is a specification.

The present invention relates to such apparatus for introducing gasesinto liquids, as for instance apparatus for producing aerated orrefreshing beverages, where the gases are in the form of fine streamsintroduced into the liquid through a hollow perforated body,

as for instance a hollow perforated shaft, which is placed in the liquidto be treated below the surface of the same and is kept rotating duringthe treatment.

The object of the invention is to facilitate the absorption of the gas,for instance carthe treatment. may be carrie bonic acid, introduced-intothe liquid, so that out in a shorter time than was possible with theapparatus hitherto used and at the same time render the said absorptionas complete and uniform as possible. For this purpose there are,according to the present invention, ob-- stacles, bafllers or dashersattached to the outer surface of the hollow perforated body or shaftthrough which the gases are introduced into the li uid and placed overthe perforations of sai body in such a way, that the streams of gases,which issue through the said perforations will meet said dashers andthereby be broken to form a fine spray which is intimately mixed withthe fluid and absorbed by the same, the fluid being also in a highdegree agitated and finely divided by means of the said dashers at thepoints where the gases meet with the liquid.

In order that my invention may be readily understood I will now describeit with reference to the accompanying drawing on which an apparatus forproducing aerated beverages embodying the present invention is shown.

Figure 1 is a longitudinal section of the said apparatus and Fig. 2 isan end view of the same with a part of the supporting stand broken away.Fig. 3 shows in a larger scale a cross section of the hollow shaftthrough which the gases are introduced into the liquid.

1 is a closed receptacle for the reception of the liquid to be treatedand is advantageously of cylindrical form. This rece tacle is mounted ona frame or stand 2, and 1s provided pith an inlet 11, for theintroduction of the liquid. In the said receptacle there is arrange aperforated hollow shaft 3, rotatively journaled in suitable bearings,and supported in the ends of the receptacle, for instance in the mannershown in the drawin Said shaftmay be provided with a helical wing orblade 4, preferably erforated as shown in Fig. 1, but other suita lemeans for agitating the liquid in the receptacle, when the shaft isrotated, may be provided. The said shaft, at one of its ends outside thereceptacle, is provided with suitable means for rotating the same, asfor instance a crank handle'6, and the other end of said shaft is, bysuitable means, air-tightly connected with a ipe 5, through which thecarbonic acid, or

ot er gases used for aerating the liquid, is introduced into the shaft.That portion of the said hollow shaft within the receptacle is providedwith a comparatively large number of fine holes or perforations 7, sothat the carbonic acid, or other ases, introduced into said hollow shaft3, t rough the pipe 5, may enter the liquid in fine streams and beunlformly dispersed the whole length of the receptacle, the said liquidbeing, at the same time, agitated by rotating the shaft. In orderhowever that the gases entering into the liquid through the perforationsmay be still more finely divided and intimately mixed with the fluidthere are, according to the present invention, obstacles such as dashersor wings 12 attached to the said shaft over the perforations in' such away that the streams of gas issuing through the perforations meet theobstacles placed over this latter and thereby the streams of 'gas; a'rebroken into a fine spray which is easily. absorbed by the fluid. 'lhesaid obstacles may be of an suitable form. Preferabl they are given t eform of small wings, see 1 ig. 3 placed aslant over the perforations inthe same direction as the shaft is rotated. Thereby is gained that thefluid which is met by the said wings will be in a high degree agitatedand finely divided by the same at the points where the gas and the fluidmeet each other.

8 is a 'acket or casing surround a portion of t e receptacle 1, the sace etween said jacket and the receptacle eing packed with a coolingmedium, such as ice, or the like, for regulating the temperature.

9 and 10 are valves for drawing off the the streams of gases enteringthe receptacle liquid, or the gases, respectivel when 116063: sary. Theliquid may be intro uced into the receptacle through the opening 11which, during the process, is kept closed.

- Having now described my invention I declare that what I claim is:

1. An apparatus for introducing gases into liquids comprising areceptacle, a hollow rotary shaft mounted in said receptacle, providedwith a lurality of radial perforations and connecte to the gas supply,and a plurality of baffle plates mounted aslant on the shaft andextending transversely of the shaft across the perforations in the shaftto-break through the perforations.

' 2. An apparatus for introducing gases into liquids comprising areceptacle, a hollow rotary shaft mounted in said receptacle, pro- Videdwith a lurality of radial perforations and connecte to the gas supply,and a plurality of curved bathe plates secured to the shaft andextending transversely of the shaft across the perforations in the shaftand in the direction of rotation of the shaft.

In witness whereof I have hereunto set my hand in the presence of twowitnesses.

SVEN PET'IER ALFRII) WENSTRGMQ Witnesses: I

' A. W. FAHLSKAM,

F. J. BERGQVIST.

